Locomotive superheater



July 25, 1939. w. SHANE 2,167,090

LOCOMOTIVE SUPERHEATER Filed June 26, 1937 2 Sheets-Sheet 1' INVENTOR ML L MM J/M/VE,

ATI'ORN EY July 25, 1939. w. SHANE LOCOMOTIVE SUPERHEATER 2 Sheets-Sheet 2 Filed June 26, 1937 INVENTOR I V/LL/AM J/mA/z; w BY ATTORNEY Patented July 25, 1939 UNITED STATE ATNT OFFICE LOCOMOTIVE SUPERHEATEB Application June 26, 1937, Serial No. 150,454

1 Claim.

The invention relates to locomotive superheaters of the type in which a header located in the smoke box has the ends of tubular elements,

secured to its lower side, which elements extend 5 into the flues of the locomotive. The gases issuing from the flues carry cinders with them, and where they impinge against the element ends and the means used to secure these ends to the header the result is rapid cutting of these parts. The object of the present invention is to provide a protection of parts involved against such cutting.

The invention is illustrated in the accompanying drawings in which Fig. l is a vertical longitudinal section of a portion of the smoke box and the adjacent boiler parts of a locomotive showing the superheater header and parts of the superheater elements as well as my protective device in place. Fig. 2 is a section on line 2-2 of Fig. 1. Fig. 3 is a detail view of a. frame enclosing an opening in the smoke box wall required in connection with my protective device, and Fig. 4 is a sectional view on line 3-4 of Fig. 3, the protective plate being shown partially withdrawn.

The boiler shell appears at I and the smoke box sheet at 2. The front flue sheet 3 has the front ends of flues 4-4 expanded into it and in these fines are located the superheater elements 5-5. The ends of these elements are secured to the bottom of the superheater header 6. This is done by means of bolts 1 which engage clamps 8 and pull them upward against washers 9-9 interposed between the enlarged heads Ill-I and the clamps. By pulling up the nuts on the bolt 1 the enlarged heads Ill-Ill are forced into engagement with seats on the under side of the header. This construction is standard and well known.

In installations of this type the header 6 is in such a position in the smoke box that gases issuing from the upper row of flues 4 impinge against the element ends and the means used to secure these ends to the header. These gases carry cinders from the fire box with them and the cinders, striking the parts in front of the fines, wear them away rapidly.

My invention consists in providing a shield H protecting the superheater element ends and adjacent parts against the impingement of the gases and cinders. This plate H extends across the smoke box from side to side, its ends resting in slotted brackets [2, which are welded or otherwise secured to the smoke box wall. The smoke box wall itself is provided with a slot I3 opposite one end of the shield II. The slot I3 is surrounded by a frame H: which is welded or otherwise secured to the smoke box sheet 2 and forms a seat for a cover plate 16 secured in place,

as by the cap-screws H. To facilitate the removal of the shield H I preferably provide a ring 58 extending through an opening in the end of the shield H. This ring is swung out of the way as in Fig. 2 when cover 16 is put in place. When required for removal of the plate it is tipped out of this position as shown in Fig.

4 and serves as a convenient means of pulling the shield out.

It will be noted that the location of the header relatively to the topmost fines and superheater 20 elements located in such flues is such that these topmost elements cannot be removed without taking out the shield ll. It is for this purpose that the provision for easy removal is made. My invention comprises not only the provisions of a shield but the provision also of easy means of taking it out of the way when required for the removal of superheater elements.

What I claim is:

In a locomotive equip-ped'with a superheater of the type in which tubular elements extend into the flues and have their ends secured to a header located in the smoke box above the outlets oi the fines in a position such that cinders carried by gases issuing from the flues travel in a direction toward the ends of the elements and the means securing them to the header; a shield placed adjacent to the bottom of the header and between the element ends and the flues so as to prevent impingement of cinders against 4 the element ends and the means whereby they are secured to the header, the shield comprising a narrow Vertical plate; slotted supports secured to the smoke box walls toreceive the ends of the shield, the smoke box wall being slotted opposite one end of the shield whereby the shield can be readily withdrawn; and a cover to close said smoke box wall slot.

WILLIAM SHANE. 5o 

